Massac County RainfallUnited StatesILMassac County55%Metropolis 55% Chance 50%Brookport 50% Chance 60%Mermet Lake 60% Chance Big BayBoazBrookportCretaceous Hills Nature PreserveFort Massac State ParkHillermanJoppaMassac Forest Nature PreserveMermetMermet LakeMetropolisMetropolis Municipal AirportNew ColumbiaRound KnobSamothShady GroveUnionville